I accidentally flooded levels 42, 41, and 40 of my Fortress, and I don't know how to stop this mess. No dwarf is going to build a wall, a floodgate, a channel, or a floor where there is water, even if it is just 1 level of water. So I don't see an obvious way of shutting off the stairs and limiting the flooding to the original level (42).

If I can manage to limit the flood to level 42, then it will be much, much easier to tackle. Which is a good way to stop this flooding?

Version: 0.50 (Steam).

Details:

One dumb Miner did not notice that the wall was damp, struck the Pickaxe there, and released all of one underground river's destructive power into my Fortress:

The water is going downstairs and flooding everything else below it:

Elevation 42

Elevation 41

Elevation 40

I accidentally flooded levels 42, 41, and 40 of my Fortress, and I don't know how to stop this mess. No dwarf is going to build a wall, a floodgate, a channel, or a floor where there is water, even if it is just 1 level of water. So I don't see an obvious way of shutting off the stairs and limiting the flooding to the original level (42).

If I can manage to limit the flood to level 42, then it will be much, much easier to tackle. Which is a good way to stop this flooding?

Version: 0.50 (Steam).

Details:

One dumb Miner did not notice that the wall was damp, struck the Pickaxe there, and released all of one underground river's destructive power into my Fortress:

The water is going downstairs and flooding everything else below it:

Elevation 42

Elevation 41

Elevation 40

Update:

Elevation 43. I cannot channel on the border of the map, so CAVE-IN, is not an option.

I accidentally flooded levels 42, 41, and 40 of my Fortress, and I don't know how to stop this mess. No one is going to build a wall, a floodgate, a channel, or a floor where there is water, even if it is just 1 level of water. So I don't see an obvious way of shutting off the stairs and limiting the flooding to the original level (42).

If I can manage to limit the flood to level 42, then it will be much, much easier to tackle. Which is a good way to stop this flooding?

Version: 0.50 (Steam).

Details:

One dumb Miner did not notice that the wall was damp, struck the Pickaxe there, and released all of one underground river's destructive power into my Fortress:

The water is going downstairs and flooding everything else below it:

Elevation 42

Elevation 41

Elevation 40

I accidentally flooded levels 42, 41, and 40 of my Fortress, and I don't know how to stop this mess. No dwarf is going to build a wall, a floodgate, a channel, or a floor where there is water, even if it is just 1 level of water. So I don't see an obvious way of shutting off the stairs and limiting the flooding to the original level (42).

If I can manage to limit the flood to level 42, then it will be much, much easier to tackle. Which is a good way to stop this flooding?

Version: 0.50 (Steam).

Details:

One dumb Miner did not notice that the wall was damp, struck the Pickaxe there, and released all of one underground river's destructive power into my Fortress:

The water is going downstairs and flooding everything else below it:

Elevation 42

Elevation 41

Elevation 40

I accidentally flooded levels 42, 41, and 40 of my Fortress, and I don't know how to stop this mess. Noone is going to build a wall, a floodgate, a channel, or a floor where there is water, even if it is just 1 level of water. So I don't see an obvious way of shutting off the stairs and limiting the flooding to the original level (42).

If I can manage to limit the flood to level 42, then it will be much, much easier to tackle. Which is a good way to stop this flooding?

Version: 0.50 (Steam).

Details:

One dumb Miner did not notice that the wall was damp, struck the Pickaxe there, and released all of one underground river destructive power into my Fortress:

The water is going downstairs and flooding everything else below it:

Elevation 42

Elevation 41

Elevation 40

I accidentally flooded levels 42, 41, and 40 of my Fortress, and I don't know how to stop this mess. No one is going to build a wall, a floodgate, a channel, or a floor where there is water, even if it is just 1 level of water. So I don't see an obvious way of shutting off the stairs and limiting the flooding to the original level (42).

If I can manage to limit the flood to level 42, then it will be much, much easier to tackle. Which is a good way to stop this flooding?

Version: 0.50 (Steam).

Details:

One dumb Miner did not notice that the wall was damp, struck the Pickaxe there, and released all of one underground river's destructive power into my Fortress:

The water is going downstairs and flooding everything else below it:

Elevation 42

Elevation 41

Elevation 40